Vols. 54-55 include abstracts of papers presented at its 60th-61st Annual meeting, 1964-65.

Physiographic processes, by J.W. Powell.--Physiographic features, by J.W. Powell.--Physiographic regions of the United States, by J.W. Powell.--Present and extinct lakes of Nevada, by I.C. Russell.--Beaches and tidal marshes of the Atlantic coast, by N.S. Shaler.--The Northern Appalachians, by B. Willis.--Niagara Falls and their history, by G.K. Gilbert.--Mount Shasta, a typical volcano, by J.S. Diller.--The physical geography of southern New England, by W.M. Davis.--The southern Appalachians, by C.W. Hayes.